CRYPTOGAMIA, FILICES. 
£09 
A. thelypteroides, Swartz. 
Nephrodium thelypteroides, Mich. 
Polypodium noveboracense, Sp. PI. 155£. 
Icon. Schk. filic. t. 46. 
JSTew Fork Shield-feriu 
On the Wissahickon and Schuylkill. Not common. Peren- 
nial. July. 
5. A. fronds bi-pinnate ; piiimilse linear-lanceo- aspienoides. 
late, incised, and serrated ; serratures £ or 3- 
toothed, terminal, more acute 5 sori oblong, 
lunate.~IFiWd. 
Nephrodium asplenoides, Mich. 
Polypodium Pennsylvanica, Muhl. in Litt. 
Aspleniuni Athyrium, Sprengel, Anleitung, 3. p. 
113. 
Icon. Schuk. filic. t. 78, 
Dark or Spleen-wort Shield-fern. 
In similar places with the preceding species. Not uncom- 
mon. Perennial. July 
5. A. fronds bi-pinnate, oblong-lanceolate; pin- buibifeium. 
iiulse opposite, oblong, obtuse, serrated, lower 
ones pinnatifid ; rachis bulbiferous ; sori sub- 
rotund. — Willd. 
Polypodium bulbiferum, Sp. PI. 1553. 
Nephrodium bulbiferum, Mich. 
Icon. Schk, filic. t, 57. 
Bulb-hearing Spleen-wort. 
Varies in size very much. In shady woods, particularly on 
rocks. Rare. Perennial. July. 
392. ONOCLEA. Willd. in Mag. Ges. naturf. fr. z. berol. 1809. 
p. 160. 
Capsules densely covering the back of the 
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